Longines · PrimaLuna

Strap for PrimaLuna 34 Automatic Moonphase Stainless Steel - Pink Gold / Silver - Roman / Bracelet

Takes 8 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width8 mm
Case diameter34 mm
ReferenceL8.126.5.71.7
FamilyPrimaLuna
MovementLongines caliber L899.2 hours, minutes, small seconds | date | moonphase
Year2025
CaseRose Gold, Stainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The PrimaLuna L8.126.5.71.7, seen from the bench

The Longines PrimaLuna reference L8.126.5.71.7 mounts the L899.2 caliber with hour, minute, small seconds, date and moon phase functions. The watch features 8mm lugs and is characterized by the moon phase complication integrated into the dial. The movement offers a classic configuration with date indication combined with the moon phase display.

Frequently asked questions

What is the lug width of the Longines PrimaLuna L8.126.5.71.7?

The lug width of the Longines PrimaLuna L8.126.5.71.7 is 8 millimetres, a dimension specifically engineered to match the proportions of the 34mm case. This reduced width ensures seamless visual integration between the steel-pink gold case and the strap, with no spatial incongruence. Any compatible strap must respect this exact measurement to guarantee stability and aesthetic coherence.

Which strap material is best suited for the Longines PrimaLuna L8.126.5.71.7?

Alligator leather represents the most versatile choice for this model, offering balance between elegance, durability, and visual harmony with the hybrid steel-pink gold case. An alligator strap in neutral tones (dark brown, black, charcoal grey) amplifies the luminosity of the pink gold without chromatic conflict. Alternatively, calf leather provides a fine grain for those preferring nearly specular surfaces, whilst shell cordovan guarantees durability exceeding six years of daily wear, developing a deepening patina over time.

How do I change the strap on a Longines PrimaLuna?

Strap replacement involves extraction of the spring bar pins connecting the lugs to the case horns. Using a dedicated spring bar tool or visiting a specialist watchmaker, balanced pressure is applied to the pins until complete detachment is achieved. Operating with precision is essential to prevent scratches on the pink gold case. For those preferring to avoid this risk, Casati Milano atelier offers strap change services with guarantee of execution and case protection during the procedure.

Can I use an aftermarket strap with a lug width different from 8mm?

No. Using a strap with a lug width either narrower or wider than 8mm causes rotational instability of the case on the watch, compromising both aesthetics and wearing security. The Longines PrimaLuna L8.126.5.71.7 case is geometrically engineered for 8mm lugs: any deviation from this specification introduces unacceptable visual and mechanical play in a watch of this quality tier.

What is the typical lifespan of a leather strap for the Longines PrimaLuna?

The lifespan of a leather strap depends on construction quality, craftsmanship, and daily usage patterns. A high-quality artisanal alligator strap, subjected to moderate use and periodic maintenance (gentle cleaning, natural air drying, annual conditioning), can last 4 to 6 years before replacement becomes necessary. Shell cordovan, due to the fibrous nature of the leather, extends this interval to 8–10 years. The guarantee provided by Casati Milano atelier covers 18 months of use from delivery, protecting against manufacturing defects.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only